<template>
    <div >
         <div class="search">
            <input v-model="keyword" type="text" name="" placeholder="输入城市名或拼音" class="search-input" id="">
        </div>
        <div 
        class="search-content"
        ref="search"
        v-show="keyword"
        >
            <ul>
                <li class="search-item boreder-bottom" v-for="item of list" :key="item.id" @click="handleClickCity(item.name)">{{item.name}}</li>
                <li v-show="hasNoData" class="search-item boreder-bottom">没有匹配的数据</li>
            </ul>
        </div>
    </div>
</template>

<script>
    import BScroll from 'better-scroll'
    import { mapMutations } from 'vuex'
    export default {
        name: 'CitySearch',
        props: {
            cities: Object
        },
        data() {
            return {
                keyword: '',
                list: [],
                timer: null
            }
        },
        computed: {
            hasNoData(){
                return !this.list.length
            }
        },
        mounted(){
            this.scroll = new BScroll(this.$refs.search,{
                click: true,
                blur: true
            })
        },
        watch: {
            keyword(){
                if(this.timer){
                    clearTimeout(this.timer)
                }
                if(!this.keyword){
                    this.list = []
                    return
                }
                this.timer = setTimeout(() => {
                    const result = []
                    for(let i in this.cities){
                        this.cities[i].forEach((value) => {
                            if(value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1){
                                result.push(value)
                            }
                        })
                    }
                    this.list = result
                }, 100);
            }
        },
        methods: {
            handleClickCity(city){
                this.changeCity(city)
                this.$router.push('/')
            },
            ...mapMutations(['changeCity'])
        }
    }
</script>

<style scoped lang='stylus'>
    @import '../../../assets/styles/varibles.styl'
    .search
        height .72rem
        padding 0 .1rem
        background $bgColor
        .search-input
            box-sizing border-box
            height .62rem
            line-height .62rem
            text-align center
            width 100%
            border-radius .06rem
            padding 0 .1rem
    .search-content
        position absolute
        left 0
        right 0
        top 1.58rem
        bottom 0
        z-index 1
        overflow hidden
        .search-item
            line-height .62rem
            padding-left .2rem
            background #ffffff
            color #666
</style>